EP0234427A2 - Balai de charbon à deux composants - Google Patents

Balai de charbon à deux composants Download PDF

Info

Publication number
EP0234427A2
EP0234427A2 EP87101981A EP87101981A EP0234427A2 EP 0234427 A2 EP0234427 A2 EP 0234427A2 EP 87101981 A EP87101981 A EP 87101981A EP 87101981 A EP87101981 A EP 87101981A EP 0234427 A2 EP0234427 A2 EP 0234427A2
Authority
EP
European Patent Office
Prior art keywords
carbon brush
layer
slots
metal
layers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP87101981A
Other languages
German (de)
English (en)
Other versions
EP0234427B1 (fr
EP0234427A3 (en
Inventor
Peter Dipl.-Ing. Hoffmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoffmann and Co Elektrokohle AG
Original Assignee
Hoffmann and Co Elektrokohle AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hoffmann and Co Elektrokohle AG filed Critical Hoffmann and Co Elektrokohle AG
Priority to AT87101981T priority Critical patent/ATE52878T1/de
Publication of EP0234427A2 publication Critical patent/EP0234427A2/fr
Publication of EP0234427A3 publication Critical patent/EP0234427A3/de
Application granted granted Critical
Publication of EP0234427B1 publication Critical patent/EP0234427B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/02—Details for dynamo electric machines
    • H01R39/18—Contacts for co-operation with commutator or slip-ring, e.g. contact brush
    • H01R39/24—Laminated contacts; Wire contacts, e.g. metallic brush, carbon fibres
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/02—Details for dynamo electric machines
    • H01R39/18—Contacts for co-operation with commutator or slip-ring, e.g. contact brush
    • H01R39/20—Contacts for co-operation with commutator or slip-ring, e.g. contact brush characterised by the material thereof

Definitions

  • the invention relates to a two-component carbon brush, which consists of at least two layers with different metal content, ie. H. a low-metal or metal-free layer and a metal-rich layer.
  • Such a carbon brush is exposed to high temperatures during manufacture and operation. Because of the different metal content, their layers also have different thermal conductivity and in particular different thermal expansion coefficients. As a result, strong thermal stresses can occur in the layers, which can lead to the formation of cracks and, in extreme cases, to the layers flaking off one another.
  • the object of the invention is to provide a two-component carbon brush that is less susceptible to damage from thermal stresses.
  • slots in one of the layers By making slots in one of the layers, the latter is divided into individual fields which are movable relative to one another and can therefore follow the thermal expansions of the other layer without large different thermal stresses occurring.
  • the slots are preferably provided in the layer with less metal and therefore also less conductive, so that the greater conductivity of the metal-rich layer is impaired as little as possible.
  • the thermal stresses in the layer can already be reduced by means of slots which do not extend over the full thickness of the layer.
  • the depth of the slots is preferably at least as great as the layer thickness of the relevant layer and preferably a little larger, so that the fields are completely separated from one another by the slots.
  • the carbon brush shown in Fig. 1 has a low-metal or metal-free layer 2 and a metal-rich layer 3, in which connection cables 5 open. With its concave contact surface 6, the carbon brush can rest on the commutator or slip ring of an electric motor.
  • Slits 4 are formed in the low-metal layer 2, which in the present case extend obliquely to the side edges of the carbon brush 3, extend over the entire extent of the layer 2 and divide it into individual fields 2a. As shown, the depth of the slots is somewhat greater than the layer thickness of layer 2.
  • the width of the slots is advantageously approximately 1 mm, and their depth is advantageously approximately 1 mm greater than the layer thickness of layer 2.
  • the slots run vertically over the height or horizontally over the width of the layer 2.
  • two intersecting groups of obliquely extending slots 4 are provided.
  • FIG. 5 corresponds to that according to FIG. 2 1 with the exception that the supply cables 5 open into the layer divided by slots.

Landscapes

  • Motor Or Generator Current Collectors (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
EP87101981A 1986-02-28 1987-02-12 Balai de charbon à deux composants Expired - Lifetime EP0234427B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87101981T ATE52878T1 (de) 1986-02-28 1987-02-12 Zweikomponenten-kohlebuerste.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8605561U DE8605561U1 (de) 1986-02-28 1986-02-28 Zweikomponenten-Kohlebürste
DE8605561U 1986-02-28

Publications (3)

Publication Number Publication Date
EP0234427A2 true EP0234427A2 (fr) 1987-09-02
EP0234427A3 EP0234427A3 (en) 1988-10-19
EP0234427B1 EP0234427B1 (fr) 1990-05-16

Family

ID=6792238

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87101981A Expired - Lifetime EP0234427B1 (fr) 1986-02-28 1987-02-12 Balai de charbon à deux composants

Country Status (4)

Country Link
EP (1) EP0234427B1 (fr)
AT (1) ATE52878T1 (fr)
DE (2) DE8605561U1 (fr)
ES (1) ES2015895B3 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2200500B (en) * 1986-12-27 1991-03-27 Carbone Ag A carbon brush for the armature of an electrical machine
GB2273822A (en) * 1992-12-22 1994-06-29 Johnson Electric Sa Brush spring arrangement for electric motor
EP1133028A2 (fr) * 2000-02-25 2001-09-12 Sgl Carbon Ag Dispositif bague collectrice pour moteurs électriques et générateurs
FR2868614A1 (fr) * 2004-03-31 2005-10-07 Valeo Equip Electr Moteur Balais pour une machine electrique
CN105896224A (zh) * 2015-01-22 2016-08-24 贵州航空发动机研究所 一种引电器的高速刷环冷却装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5414319A (en) * 1994-03-02 1995-05-09 Lucas Aerospace Power Equipment Corporation Dynamoelectric machine with brush having slanted core
DE10046048A1 (de) * 2000-09-18 2002-04-04 Bosch Gmbh Robert Anordnung und Verfahren zum Schalten eines Starterstroms
DE10344717A1 (de) * 2003-07-17 2005-02-24 KÄSDORF, Wolfgang Stromübertragungsverbindung an eine Kohlebürste für einen Elektromotor
CN114696174B (zh) * 2020-12-31 2023-04-28 北京金风科创风电设备有限公司 滑环装置、偏航***及风力发电机组

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1199230A (fr) * 1956-07-09 1959-12-11 Morgan Crucible Co Perfectionnement aux balais de contact électrique
GB1522503A (en) * 1975-10-14 1978-08-23 Morganite Elect Carbon Brushes for electric machines

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1199230A (fr) * 1956-07-09 1959-12-11 Morgan Crucible Co Perfectionnement aux balais de contact électrique
GB1522503A (en) * 1975-10-14 1978-08-23 Morganite Elect Carbon Brushes for electric machines

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2200500B (en) * 1986-12-27 1991-03-27 Carbone Ag A carbon brush for the armature of an electrical machine
GB2273822A (en) * 1992-12-22 1994-06-29 Johnson Electric Sa Brush spring arrangement for electric motor
US5402027A (en) * 1992-12-22 1995-03-28 Johnson Electric S.A. Brush assembly for an electric motor
EP1133028A2 (fr) * 2000-02-25 2001-09-12 Sgl Carbon Ag Dispositif bague collectrice pour moteurs électriques et générateurs
EP1133028A3 (fr) * 2000-02-25 2003-01-29 Sgl Carbon Ag Dispositif bague collectrice pour moteurs électriques et générateurs
FR2868614A1 (fr) * 2004-03-31 2005-10-07 Valeo Equip Electr Moteur Balais pour une machine electrique
CN105896224A (zh) * 2015-01-22 2016-08-24 贵州航空发动机研究所 一种引电器的高速刷环冷却装置

Also Published As

Publication number Publication date
DE3762787D1 (de) 1990-06-21
ATE52878T1 (de) 1990-06-15
EP0234427B1 (fr) 1990-05-16
DE8605561U1 (de) 1986-05-15
ES2015895B3 (es) 1990-09-16
EP0234427A3 (en) 1988-10-19

Similar Documents

Publication Publication Date Title
DE4000089C2 (fr)
CH439445A (de) Elektrische Schaltungsgruppe mit einem Rahmenteil und wenigstens einem Isolierblock
DE3511722A1 (de) Elektromechanische baugruppe fuer integrierte schaltkreismatrizen
EP0234427B1 (fr) Balai de charbon à deux composants
DE1440907A1 (de) Elektrischer Schaltungsaufbau
DE4312409B4 (de) Einstellbarer Kondensator
DE1514562B2 (de) Anordnung zur herstellung eines halbleiter-bauelementes
DE2342923B1 (de) Verfahren zur Herstellung einer Zweiphasen-Ladungsverschiebeanordnung und nach diesem Verfahren hergestellte Zweiphasen-Ladungsverschiebeanordnung
EP0187255A1 (fr) Connecteur à fiches
WO1996021260A1 (fr) Balai en charbon
DE9318909U1 (de) Abschirmhaube für Schaltungsplatinen
EP0335353A2 (fr) Grille en matériau de tôle électriquement conductrice
DE2904004A1 (de) Elektrische sammelschiene mit doppelten kontakten
DE1514742A1 (de) Halbleiteranordnung
DE3537262A1 (de) Verfahren zur herstellung eines solarzellenverbinders
DE3609654C2 (fr)
DE2252830C2 (de) Halbleiterbauelement mit einem Halbleiterelement in einem hermetisch geschlossenen Gehäuse
DE2348494A1 (de) Leitungsloser chiptraeger mit aeusseren anschluessen und verfahren zu seiner herstellung
DE1590370A1 (de) Elektrische Schaltungsplatten und Verfahren zu ihrer Herstellung
DE2543079B2 (de) Verfahren zum Herstellen von Trockenelektrolytkondensatoren
DE1113483B (de) Schaltungsanordnung mit blockfoermigen, in ein Rahmengestell einschiebbaren Schaltungsgruppen
EP0020666A1 (fr) Dispositif semiconducteur
DE3513504A1 (de) Geschirmte anschlussdose
DE9006782U1 (de) Kollektor
DE7914024U1 (de) Abgedichtetes gehaeuse aus metall und kunststoff fuer halbleiter-vorrichtungen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

RHK1 Main classification (correction)

Ipc: H01R 39/24

17P Request for examination filed

Effective date: 19890418

17Q First examination report despatched

Effective date: 19890803

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19900516

Ref country code: NL

Effective date: 19900516

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19900516

Ref country code: BE

Effective date: 19900516

REF Corresponds to:

Ref document number: 52878

Country of ref document: AT

Date of ref document: 19900615

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3762787

Country of ref document: DE

Date of ref document: 19900621

ITF It: translation for a ep patent filed

Owner name: UFFICIO TECNICO ING. A. MANNUCCI

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
ITTA It: last paid annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19910228

Ref country code: LI

Effective date: 19910228

Ref country code: CH

Effective date: 19910228

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19991217

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20000110

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20000218

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20000222

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20000418

Year of fee payment: 14

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010212

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010212

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010213

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20010212

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20011031

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20011201

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20021016

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050212